Yikes! This blog is rapidly degenerating into one of those silly sign sites. This latest is from reader Glenn (of Terracotta fame), who spied it in Poopignan, er, Perpignan in the south of France. Loosely translated it says:
Make a clean gesture: use the bags provided for you in this distributor.
I'm not sure it would work around here, though. The chances of anyone making a clean gesture if you asked them to scoop up after their pit bull are about as likely as getting a fly-tipping problem resolved by Thanet District Council!